From mboxrd@z Thu Jan 1 00:00:00 1970 From: ethan zhao Subject: Re: [PATCH] intel_pstate: allow to be built as module and handle Sun server power capping. Date: Tue, 18 Nov 2014 16:32:18 +0800 Message-ID: <546B0412.8060102@oracle.com> References: <1416299253-14912-1-git-send-email-ethan.zhao@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1416299253-14912-1-git-send-email-ethan.zhao@oracle.com> Sender: linux-kernel-owner@vger.kernel.org To: Ethan Zhao Cc: dirk.j.brandewie@intel.com, viresh.kumar@linaro.org, rjw@rjwysocki.net, corbet@lwn.net, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, ethan.kernel@gmail.com, joe.jin@oracle.com, brian.maly@oracle.com List-Id: linux-pm@vger.kernel.org Sorry, I missed the -n to git format-patch, please ignore this patch. Thanks, Ethan On 2014/11/18 16:27, Ethan Zhao wrote: > Oracle Sun servers(X86) have power capping features that work via ACPI _PPC method, > patch No.1 is used to skip this driver if Oracle Sun server and _PPC detected. patch > No.2 is used to allow the driver to be configured and built as a module, so provide > the flexibility of configuration by userland. patch No.3 introduce a module parameter > and a kernel command line parameter, let user could force it loaded even on Oracle Sun > Servers(X86), that will be useful for debug\test\workaround etc purpose. > > These patches have been tested on Oracle Sun server X4-2 series with following > cases on stable v3.18-rc3. > > a. Configure and build intel_pstate as builtin. > Boot without any kernel line parameter. > Boot with intel_pstate=ignore_acpi_ppc. > b. Configure and build intel_pstate as module. > Load intel_pstate drive without any module parameter. > Load intel_pstate driver with ignore_acpi_ppc=1 > > These cases passed and work fine. > -- > Brian Maly (1): > intel_pstate: allow driver to be built as a module > > Ethan Zhao (2): > intel_pstate: skip the driver if Sun server has ACPI _PPC method > intel_pstate: add module and kernel command line parameter to ignore > ACPI _PPC > > Documentation/kernel-parameters.txt | 3 +++ > drivers/cpufreq/Kconfig.x86 | 2 +- > drivers/cpufreq/intel_pstate.c | 32 ++++++++++++++++++++++++++++++++ > 3 files changed, 36 insertions(+), 1 deletion(-) >